Surely the many miles of underground pipes are a breeding ground for microbes, right?
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to ‘breed’ bacteria need something to feed on.
water in the pipes is filtered and aeriated which kills or retards microbes that would persist in the otherwise airless water.
municiple water systems actually have microbes well under control normally.
these days we have to consider lead, arsenic, other toxic metals and certain forever chemicals like fire retardants.
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